Unfortunately, no solution from the above list worked for my friend and by fluke he toggled the “Accessibility->Switch Access” option on his Yu Yuphoria phone and the network came. While I am pretty much convinced this should not be the reason for the network to appear, but having a Reliance Jio Security setting in there as shown below makes things a bit confusing??? If you are having a similar issue, try this unconvincing solution and if this works do share your results with us in comments section below.